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by on September 16, 2006 at 5:36 pm in Web/Tech | Permalink

1. The Promise (and Limits) of Neuroeconomics

2. Remember Fabio Rojas, our most frequent guest blogger?  Now he is blogging "full-time," on

3. How does the traffic light know when a car is there?  I used to think "the weight of the car," but I was wrong.

1 Andromeda September 16, 2006 at 6:48 pm

*g* You get to be very alert for these inductive loops if you do a lot of biking. Bikes can sometimes, but not always, trigger them if you ride over them just right. It can be very irritating on low-traffic roads when there’s not a car liable to come along and save you quickly, and especially on low-traffic side streets when you need to turn onto or cross a high-traffic main street.

2 BillWallace September 16, 2006 at 8:17 pm

I always assumed it was weight too.
I am usually very thankful for those sensors, until some nitwitt ahead of me stops short or pulls up too far to trigger them, and I end up sitting through 2 or more cycles until I give up and go another way.

3 Pienso September 17, 2006 at 11:04 am

Readers might also be interested in the article in the current New Yorker on neuroeconomics:

Just in case.

4 Darlton September 18, 2006 at 6:58 am


…rather surprising that educated persons really thought there was a ‘weight-scale’ triggering all those traffic lights.

Such simple technology is a widespread mystery ??

[” We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology “]

(– Carl Sagan)

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